end tightening

例句：

1. 1.The rope was securely tied to the tree.
   这根绳子被安全地系在树上。
2. 2.He quickly tightened the screws on the door.
   他迅速将门上的螺丝拧紧。
3. 3.The car was tightly locked before we left.
   我们离开前，汽车被紧紧锁上了。